I have an established network scheme that I needed to add a DMZ zone too for gaming purposes (Xbox, ps4 etc..) Due to NAT policy issues I was having with the Xbox 360. I have a Sonicwall TZ 205 behind a 2Wire 3800 HGV-B and everything is able to access the WAN but none of the devices can see one another.. I have a media server (Synology DS213) that I would like to stream movies from but , neither the Xbox nor the PS4 can communicate. When I try to scan the network for computers from the Xbox, the Synology comes up in the list but, I cannot connect. I also have a WNDR 3700 set up as a wireless access point with the same issue.

My Lan is using port / zone X0 on the sonicwall with the 192.168.1.xx scheme. Subnet mask 255.255.255.0

My DMZ is using port / zone X2 on the sonicwall with the 10.10.0.xx scheme. Subnet mask 255.255.255.0

The WNDR is plugged in to a switch which is on the X0 zone but, is using 10.0.0.1. Subnet mask 255.255.0.0

The synology on the X0 zone as well with a 192.168.1.xx scheme.

Maybe it's just that the subnet masks are conflicting or class A networks cannot communicate with class C networks. Or... maybe I just have it hosed up.

The 2 wire has it's own firewall that I cannot turn off and has a dmzplus zone set up for the WAN IP.

To leave a subnet/mask the traffic goes to a layer 3 device (sonicwall). However since the sonicwall doesn't know about one of your x0 subnets since you have two, it can't help.

If you setup all the subnets to interfaces in the sonicwall individually, then you can communicate across. However xbox and some other things rely on multicast which is another few steps to work across zones.

None of your subnets conflict in terms of the IP addresses. Did you make sure that the subnets are allowed to communicate with each other. I'd also set up the third subnet on the Sonicwall rather than on the switch.

And still get moderate NAT on the DMZ and get kicked out of Xbox live consistently. I am currently using the uverse internet service which causes a "router behind a router" scenario, and thought that maybe that was the culprit so, I actually had Comcast cable internet installed thinking that would solve my problem. Nope.. Trying to set up the comcast service has been a nightmare beyond the scope of my imagination.

I switched back to uverse (both services are still active) for now because at least it is workable. I feel that I am trying to accomplish a very basic task and can't seem to accomplish it. I have been on support with Sonicwall for hours to no avail. Everyone just points me to someone else. To say that I am at my wits end is a massive understatement.

I simply can't believe that no one has run across this before with so many sonicwall appliances in play.

here is what I would do with your situation:
make one flat network zone behind the sonicwall. There is absolutely no reason to run a DMZ. If you need port forwards, use the public server wizard (just choose webserver). It will make the address objects and groups, then you just add the ports/services you want to the created group.

I tried running everything from the Lan (X0) interface without having to create a DMZ but couldn't get the desired result. Basically, the same thing I am experiencing now with the DMZ... So, maybe you are right, the DMZ isn't helping the situation. However, I have forwarded the required ports and tested them through the sonicwall interface that shows the ports forwarding but the Xbox is resetting the packets.

There is no way that I know of to log in to the xbox to see what is going on internally so I don't know what it's trying to do or not do. Maybe the xbox needs to initiate the ports opening which is why I can't ping the port using http://ping.eu/. I am at a complete loss on this one. I set up an FTP server (Nas) and RDP to my desktop using port forwarding with no issues. I just can't make this happen with the Xbox. I have connectivity but simply get kicked out due to the NAT issues.

I forwarded all of them. UDP and TCP alike. I created a service group to house them all and still getting kicked out of live. I tested to see if the ports were forwarding in the router and they are forwarding to the static ip I set up on the xbox but, no dice.

I belive you are correct regarding upnp. However, there are three accepted solutions on that thread.. which one worked?

I haven't tried this...

"I think transparent mode is the last line of defense. If this doesn't work, I'm sticking to my and MASQUERIAD's belief SW will not support uPnP, which, I believe, is what the xbox is wanting to utilize for the different services. MASQUERAID commented already on setting up transparent mode. The steps can be found here:

if you have a block of ip addresses from your isp, you can let one go to the sonicwall and let one go right through to the xbox, every port with no firewall. Basically puts your xbox outside your network

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